YaST LDAP-server

I have istalled LDAP,SAMBA server. All works fine.
Access to LDAP server from local and remote machines is OK.
But when I try to start YaST LDAP-server to config, I have the following message

Error while enabling LDAPI listener
Enabling thi LDAPI Protocol listener failed

And after that, the YaST LDAP-server terminates. Any comments and suggestion are welcome.